Update HighScores.java

Updated HighScore see if it's ok?
Update HighScores.java
Update HighScores.java
Update HighScores.java
adding images for wiki
fixed compile errors in HighScores class

cleaned up the logic some and plugged it in to the rest of the
application as well
implemented states in the game screen.

Implemented states in the game screen to more easily manage what should
be happening at any given time.
Moved the ScoreDialog class to its own file.
Created a Score object that contains more information about a high score
than just the points.
Merging from kelly what isn’t a conflict- images
added on screen dpad
added on screen dpad
updated dpad to reuse the default stage.
changed the images to use a click listener.
turned the ball controller into a click listener.
resized the images to be 64x64 because android requires they be in a power of 2.
The ball object will now be created to be the same size as the map object created in the collision layer of the map. So larger or smaller balls are now possible.
Cleaned up the WorldPopulator.
Fixed bug with polygon map objects in the WorldPopulator.
Added support for PolylineMapObjects.
Allowed various properties for objects to be set from the map object properties so that things like restitution and friction can be set on a per object basis.
New images for wiki page on using git.
adding in a license file
adding more images for wiki docs
Merge branch 'master' into MyOtherBranch
adding in another image for wiki docs
More work on #15
added some stub functions for dealing with scores.
mostly complete level/game end screen.
tweaked the push bumpers and dpad input.
push bumpers will now accelerate the ball to a fixed speed. if the ball is already going faster than that speed then the ball's velocity is not changed. the speed setting for a push bumper is now configurable via the map object property "speed" so individual bumpers can have their own speed setting.
tweaked the dpad input slightly so that the tilt angle is adjusted in smaller increments.